MONTPELIER — The owner of a crude oil pipeline that runs between Maine and Montreal is asking Vermont environmental regulators to reconsider a ruling that would require a new review under the state’s land use law if the company seeks to move Canadian tar sands oil in the pipeline.

Last month, Vermont’s District 7 Environmental Commission determined the Portland Pipeline Corp. would need a new Act 250 land-use permit if it proposes to move Canadian tar sands oil through an existing pipeline between Montreal and Portland.

The decision said changing the use of the pipeline would represent a significant change to the existing pipeline and so warrant a new review.

In its request, dated Tuesday, the pipeline company says it has no plans to convert the pipeline to carry tar sands oil.